special occasion; once‐in‐a‐lifetime chance
例文
あの人と巡り会えたのは、一期一会なのでしょうか。
Our meeting like that is probably the kind of thing that only happens once.
人生、一期一会というじゃないの。出会いを大切にしようよ。
Treasure every encounter with others because you never know if you'll meet a person just once in your lifetime.
令和reiwa 元年（gannen）
例文
あの人と巡り会えたのは、一期一会なのでしょうか。
Our meeting like that is probably the kind of thing that only happens once.
人生、一期一会というじゃないの。出会いを大切にしようよ。
Treasure every encounter with others because you never know if you'll meet a person just once in your lifetime.
令和reiwa 元年（gannen）